CN1837905A - Flexible liquid crystal display and manufacturing method thereof - Google Patents
Flexible liquid crystal display and manufacturing method thereof Download PDFInfo
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- CN1837905A CN1837905A CNA2006100591859A CN200610059185A CN1837905A CN 1837905 A CN1837905 A CN 1837905A CN A2006100591859 A CNA2006100591859 A CN A2006100591859A CN 200610059185 A CN200610059185 A CN 200610059185A CN 1837905 A CN1837905 A CN 1837905A
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/04—Brush bodies; Handles integral with brushware shaped as gloves or finger-stalls or other special holding ways, e.g. by the tongue
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/0003—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water containing only one dose of substance, e.g. single-use toothbrushes
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/005—Arrangements of the bristles in the brush body where the brushing material is not made of bristles, e.g. sponge, rubber or paper
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/24—Surgical instruments, devices or methods, e.g. tourniquets for use in the oral cavity, larynx, bronchial passages or nose; Tongue scrapers
- A61B17/244—Surgical instruments, devices or methods, e.g. tourniquets for use in the oral cavity, larynx, bronchial passages or nose; Tongue scrapers for cleaning of the tongue
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133377—Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/02—Materials and properties organic material
- G02F2202/022—Materials and properties organic material polymeric
- G02F2202/023—Materials and properties organic material polymeric curable
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
Abstract
A liquid crystal display (LCD) includes a first insulating substrate, a second insulating substrate arranged opposite to the first insulating substrate, a liquid crystal layer arranged between the first insulating substrate and the second insulating substrate, a spacer which defines and maintains a substantially uniform gap between the first insulating substrate and the second insulating substrate, and a high molecular weight layer which is provided on a surface of the second insulating substrate and attaches the spacer to the second insulating substrate.
Description
Technical field
The present invention relates to a kind of LCD (LCD) and manufacture method thereof, more specifically, relate to a kind of flexible liquid crystal display (flexible liquid crystal display) and manufacture method thereof.
Background technology
LCD comprises separately having a counter plate of electrode on the surface within it and place dielectric anisotropic liquid crystals layer between the described panel.In LCD, the variation of the electric field intensity that change the voltage difference that produces between the electrode, promptly produces by described electrode, thus change optical transmission rate by LCD.Obtain required image by the voltage difference between the control electrode.Described light can be natural light, or is used for the artificial light that light source sent of LCD independently.
Described liquid crystal layer is formed in the cell gap (cell gap) between the two panels.For preferable image display, importantly formation and holding unit gap are even.
Studying and developing for example equally crooked flexible liquid crystal display of sensitive paper, particularly having the flexible liquid crystal display of enough thin substrate, described substrate is made of the plastics replacement nonbreakable glass of softness.
Yet, when flexible display is in flexible state, for example is folded or when rolled-up, it evenly is difficult the holding unit gap.If can not keep uniform cell gap, just can not demonstrate required image, and make image produce distortion.
Summary of the invention
The invention provides a kind of technology that between a counter plate of LCD, forms and keep uniform cell gap and closely assemble described panel.
Further feature of the present invention will be described in the following description and will partly be become clear from explanation, perhaps can be by practice of the present invention by cognitive.
The invention discloses a kind of LCD (LCD), comprising: first insulated substrate; The second insulated substrate that is oppositely arranged with first insulated substrate; Be arranged at the liquid crystal layer between described first and second insulated substrates; Form and keep the sept (spacer) in basic uniform gap between described first insulated substrate and the second insulated substrate; And, being formed on the lip-deep high molecular layer of described the second insulated substrate, described high molecular layer links to each other described sept with described the second insulated substrate.
The invention also discloses a kind of LCD (LCD), comprising: first insulated substrate; The second insulated substrate that is oppositely arranged with first insulated substrate; Be arranged at the liquid crystal layer between described first and second insulated substrates; Form and keep the sept in basic uniform gap between described first insulated substrate and the second insulated substrate; And, be arranged on the high molecular excrescence between described first insulated substrate and the second insulated substrate.
The invention also discloses a kind of manufacture method of LCD, comprising: on first insulated substrate, form first electrode; On first electrode, form sept; The potpourri of polymerisable monomer and liquid crystal material is applied on first electrode with fixed spacers; The second insulated substrate is arranged on the fixed spacers; Make described polymerisable monomer between polymerization period, be separated (phaseseparating) with liquid crystal material; And, the polymkeric substance that is separated is attached on the surface of the second insulated substrate and makes sept and the second insulated substrate be attached on it.
It should be understood that above general description and following detailed description all are exemplary and indicative, it is intended to provide for of the present invention and further specifies.
Description of drawings
Description of drawings embodiments of the invention and with describe one and be used from and explain principle of the present invention, to provide the present invention is further understood and a combined part of coming in to have constituted this instructions in accompanying drawing is included in.
Fig. 1 is the skeleton view according to the LCD of first embodiment of the invention;
Fig. 2 is a skeleton view, shows the state that is arranged on the sept on the employed common electrical pole plate of LCD shown in Figure 1;
Fig. 3 is the sectional view of LCD shown in Figure 1;
Fig. 4 is the top view that is used for according to the sept of the LCD of first embodiment of the invention;
Fig. 5 is the skeleton view of sept shown in Figure 4;
Fig. 6 is the photo that is in black state according to the LCD of first embodiment of the invention;
Fig. 7 is the photo that is in white state according to the LCD of first embodiment of the invention;
Fig. 8 is the curve map that illustrates according to mutual relationship between voltage (V) in the LCD of first embodiment of the invention and the transmissivity (T);
Fig. 9 is the curve map that illustrates according to the response time of the LCD of first embodiment of the invention;
Figure 10 and Figure 11 are that two insulated substrates according to the LCD of first embodiment of the invention are separated from each other the captured photo in back;
Figure 12 is the skeleton view according to the LCD of second embodiment of the invention;
Figure 13 is a skeleton view, shows the state that is formed on the sept on the employed common electrical pole plate of LCD shown in Figure 12;
Figure 14 shows the UV irradiation process of the LCD that is used to make second embodiment of the invention;
Figure 15 is a LCD shown in Figure 12 captured photo when being in white state;
Figure 16 is that LCD shown in Figure 12 is in photo captured when deceiving state;
Figure 17 and Figure 18 are that two insulated substrates according to the LCD of second embodiment of the invention are separated from each other the captured photo in back;
Figure 19 A, 19B, 19C, 19D and 19E are schematic cross sectional view, show the operation of LCD of manufacturing according to second embodiment of the invention;
Figure 20 shows the SEM photo that is applicable to the pressing mold of operating shown in Figure 19 A, 19B, 19C, 19D and the 19E (stamp);
Figure 21 shows the SEM photo of the sept that utilizes pressing mold formation shown in Figure 20;
Figure 22 is the amplification profile of the represented part of circle among Figure 21;
Figure 23 A and Figure 23 B are photos captured when being in black state and white state respectively by the LCD that operation shown in Figure 19 A, 19B, 19C, 19D and the 19E is made;
Figure 23 C and Figure 23 D are the LCD made by operation shown in Figure 19 A, 19B, 19C, 19D and the 19E captured photos of middle gray state at response 3V and 6V grayscale voltage;
Figure 24 is the skeleton view according to the LCD of third embodiment of the invention.
Embodiment
Describe the present invention more fully hereinafter with reference to accompanying drawing, embodiments of the invention have been shown in the accompanying drawing.Yet the present invention can and should not be construed as with multiple multi-form enforcement and only limit to embodiment described here.And it is in order to make the disclosure thorough that these embodiment are provided, and scope of the present invention is fully informed those skilled in the art.In the accompanying drawings, for having exaggerated the size and the relative size in layer and zone for the purpose of clear.
Be understood that, when an element or one deck be called as another element or layer " on " or when " being connected to " or " being connected in " another element or layer, its can be directly on another element or layer or be directly connected to or be connected in another element or layer, perhaps, also can there be insertion element or layer.It will also be appreciated that when the element such as layer, film, zone or substrate be called as another element " on " time, can perhaps, also can there be insertion element in it directly on another element.
With reference to Fig. 1 and Fig. 2 the LCD according to first embodiment of the invention is described below.
Fig. 1 is the skeleton view of LCD, and Fig. 2 illustrates the skeleton view that is formed on the sept state on the common electrical pole plate that is used for LCD shown in Figure 1.
Referring to Fig. 1, for example the sept 321 of lattice-shaped is arranged at insulated substrate 110 and has between the following insulated substrate 210 of public electrode 270.High molecular layer 331 is arranged on the inside surface of upper substrate 110.
The interval (being called cell gap) that described sept 321 keeps between two substrates 110 and 210, and this is separated into a plurality of zones at interval.As shown in Figure 1, each zone can be corresponding to the combination of pixel cell or pixel cell.Described zone is filled with nematic crystal 3.
Sept 321 can utilize photoetching process to form.For example, after with photoresist coating infrabasal plate 210, the substrate 210 that is coated with photoresist optionally is exposed to UV light by predetermined photomask, then the photoresist that exposed is developed, thereby caused the formation of sept 321.Sept 321 is not limited to make with photo anti-corrosion agent material, also can be made by other material, such as elastomeric polymer etc.These materials will be described following.
With reference to Fig. 3 above-mentioned LCD is described below.
Fig. 3 is that the LCD among Fig. 1 is made insulated substrate 210 down be shown in the top by upper and lower inversion and goes up insulated substrate 110 and be shown in sectional view after the bottom.
Referring to Fig. 3, gate electrode 124 and storage electrode 133 are arranged on the inside surface of upper substrate 110, for example in the face of infrabasal plate 210.Gate electrode 124 as the part of gate line (not shown) provides sweep signal.Thereby receive predetermined voltages as the storage electrode 133 of the part of storage electrode line (not shown) and form memory capacitance.
Amorphous silicon (a-Si) pattern 154 is formed on the gate insulator 140, and Ohmic contact 163 and 165 is formed on the a-Si pattern 154, is separated from each other simultaneously.
The source electrode 173 and the drain electrode 175 that are connected with the data line (not shown), for example are coupled are formed at respectively on Ohmic contact 163 and 165, are separated from each other simultaneously and face with each other.
The public electrode of being made by ITO or IZO 270 is formed on the color filter 230.
Thereby both alignment layers 23 is formed on the public electrode 270 liquid crystal molecule is orientated along predetermined direction.
Sept 321 is arranged between upper substrate 110 and the infrabasal plate 210.It passes through high molecular layer 331 close attachment on the passivation layer 180 and pixel electrode 190 of upper substrate 110.
Liquid crystal is inserted into or is filled in the cell gap between two substrates 110 and 210, and this cell gap is held by sept 321, has formed liquid crystal layer thus.
As shown in Figure 3, first polaroid 12 can be arranged on the outside surface of upper substrate 110, and phase shift films (retardation film) 21 and second polaroid 22 can be arranged on the outside surface of infrabasal plate 210.It should be understood that and to save phase shift films 21 or a plurality of phase shift films 21 can be arranged on the infrabasal plate 210.In addition, can between first polaroid 12 and upper substrate 110, another phase shift films be set.
The manufacture method of above-mentioned LCD will be described below.
Metallic alloy (metallic material), for example metal are deposited on the insulated substrate 110, on this metallic alloy, carry out photoetch (photoetching) then, thereby form gate line with gate electrode 124 and storage electrode line with storage electrode 133.
Described a-Si layer and doping a-Si layer simultaneously by photoetch to form as yet not the Ohmic contact that is in unfinished state 163 and 165 of separating with a-Si pattern 154.
Then metallic layers (metallic layer) is deposited on uncompleted Ohmic contact 163 and 165, and on the metallic layers that is deposited, carries out light etching process has source electrode 173 and drain electrode 175 with formation data line.
Utilize the optionally etching Ohmic contact of mask 163 and 165 and be completed into Ohmic contact 163 and 165 of source electrode 173 and drain electrode 175 then, thereby Ohmic contact 163 and 165 is separated from each other.
Then, passivation layer 180 is deposited on data line and the drain electrode 175, and on the passivation layer 180 that is deposited, carries out light etching process exposes drain electrode 175 with formation contact hole.
After forming contact hole, can be with transparent material, be deposited on the passivation layer 180 as ITO or IZO, and on the transparent material of deposition, carry out light etching process, form pixel electrode 190 thus.
Below, be described in down the operation that forms color filter 230 on the insulated substrate 210 according to one embodiment of the invention.
The individual layer chromium or double-deck chromium and the chromated oxide can be deposited on the infrabasal plate 210, on the chromium that is deposited of individual layer or double-deck chromium that is deposited and chromated oxide, carry out photoetch then, form black matrix 220 thus, described black matrix is separated into some pixel regions or picture element matrix with display board.
Afterwards, the available black matrix 220 of photoresist coating that comprises pigment.Then, carry out UV irradiation and UV developing process in succession.Repeat these technologies to form redness, green and blueness (RGB) color filter 230.
With transparent material, be deposited on the color filter 230, form public electrode 270 thus then as ITO or 1ZO.
Following according to one embodiment of the invention, the method for assembling infrabasal plate 210 and upper substrate 110 is described.
Photoresist is applied or is applied on the public electrode 270 of infrabasal plate 210, on the photoresist of coating, carry out exposure technology and the developing process that utilizes predetermined mask then in succession, form sept 321 thus.
Use orientation agent (aligning agent) to apply or put on sept 321 then, and carry out friction process (rubbing process) thereon, form both alignment layers 23 thus.
Afterwards can be and the monomer of polymerization combines with liquid crystal by UV irradiation.For example, described monomer can be the UV cured epoxy resin NOA-65 that Norland company produces.Then described potpourri is filled or is inserted in the zone of being separated by sept 321.
The upper substrate 110 that will have TFT (thin film transistor (TFT)) and formation pixel electrode 190 thereon then is arranged on the sept 321 and to it and shines UV light.At this moment, beginning polymerization through the monomer of UV irradiation separates with liquid crystal phase simultaneously.The polymkeric substance that is separated has caused the formation of high molecular layer 331 attached to the surface of the pixel electrode 190 and the passivation layer 180 of upper substrate 110.
High molecular layer 331 plays enough adhesive effects between sept 321 and upper substrate 110.
Fig. 4 is the top view that is used for according to the sept of the LCD of first embodiment of the invention, and Fig. 5 is the skeleton view of sept shown in Figure 4.
As shown in Figure 4 and Figure 5, the first embodiment of the present invention comprises the lattice-shaped sept, wherein is about 100 μ m * 300 μ m by separated each the regional size of described sept.Captured photo is shown in respectively among Fig. 6 and Fig. 7 when producing electric field in comprising the LCD of this sept.
Fig. 6 captured photo when being in black state according to the LCD of first embodiment of the invention.Fig. 7 captured photo when being in white state according to the LCD of first embodiment of the invention.
Fig. 8 is the curve map that is illustrated in according to mutual relationship between voltage (V) in the LCD of first embodiment of the invention and the transmissivity (T).
In the curve map of Fig. 8, show the typical V-T characteristic of the LCD of normal white mode.As shown in Figure 8, transmissivity maximum when voltage is 0V, and transmissivity increases along with voltage and reduces.
Fig. 9 is the curve map that illustrates according to the LCD response time of first embodiment of the invention.
Referring to Fig. 9, the stain representative voltage is connected the response speed during (voltage-on) state, and the white point representative voltage disconnects the response speed during (voltage-off) state.Shown in this curve map, during voltage on-state and this two states of voltage off-state, response speed is all less than 30ms.Therefore, this LCD can show mobile image effectively.
Figure 10 and Figure 11 be used for two insulated substrates according to the LCD of first embodiment of the invention be separated from each other after captured photo.
The photo of Figure 10 and Figure 11 shown before upper substrate 110 and infrabasal plate 210 are separated from each other, and was formed at sept 321 on the infrabasal plate 210 closely was attached to, for example adheres to upper substrate 110 by high molecular layer 331 inside surface.
Figure 12 is the skeleton view according to the LCD of second embodiment of the invention.Figure 13 is a skeleton view, shows the situation of sept set on the common electrical pole plate that is used for LCD shown in Figure 12.
Referring to Figure 12, last insulated substrate 110 is positioned opposite to each other with the following insulated substrate 210 with public electrode 270, and a plurality of strip septs 322 are arranged between described upper substrate 110 and the infrabasal plate 210 in parallel with each other.Between upper substrate 110 and infrabasal plate 210, the high molecular excrescence 332 that straight line forms intersects with sept 322.
According to such structure, the interval that sept 322 limits and kept basic fixed between upper substrate 110 and infrabasal plate 210.Intersection by sept 322 and high molecular excrescence 332 is divided into a plurality of zones at interval with this.Each zone can be corresponding to the combination of pixel cell or pixel cell.Fill or insert described zone with nematic crystal.
Utilize high molecular excrescence 332 that upper substrate 110, sept 322 and infrabasal plate 210 are adhered to.High molecular excrescence 332 obtains monomer polymerization by utilizing mask to carry out the UV irradiation.For example, monomer is combined with liquid crystal 3, and this potpourri is filled or inserted in the zone of being separated by sept 322, described monomer is such as being as the Norland optical adhesive (NOA-65) of the product of Norland company etc.Then, upper substrate 110 is transferred on the sept 322, and UV illumination is mapped on the upper substrate 110 via predetermined mask.Along with beginning polymerization, UV irradiation monomer anisotropically is separated with liquid crystal 3 simultaneously.The polymkeric substance that is separated has formed the excrescence 332 between upper substrate 110 and the infrabasal plate 210.
Be similar to structure shown in Figure 3, on upper substrate 110 and infrabasal plate 210, TFT, pixel electrode, public electrode etc. be set.
The method of assembling upper substrate 110 and infrabasal plate 210 is described below with reference to Figure 14.
Figure 14 shows the UV irradiation process that is used to make according to the LCD of second embodiment of the invention.
Photoresist is applied or is coated on the infrabasal plate 210 with public electrode 270.Make the substrate 210 that is coated with photoresist optionally be exposed to UV light then via predetermined mask, and the development of photoresist that will expose, strip sept 322 formed thus.
Also rub with orientation agent coating sept 322 then, thereby form the both alignment layers (not shown).
Then can be and the monomer of polymerization mixes with liquid crystal 3 by UV irradiation.This potpourri is inserted in the zone of being separated by sept 322.For example, a kind of monomer that particularly is fit to is the UV cured epoxy resin NOA-65 that is produced by Norland company.
The upper substrate 110 that will have TFT and pixel electrode 190 is arranged on the sept 322, and UV illumination is mapped on upper substrate 110 or the infrabasal plate 210.As shown in figure 14, can utilize photomask to carry out the UV irradiation, this photomask comprises a plurality of slits that are substantially parallel to each other and are provided with.The monomer that shone through UV begins polymerization along with separating with liquid crystal phase.This polymkeric substance that is separated adheres between upper substrate 110 and the infrabasal plate 210, has formed the high molecular excrescence 332 that substantially linearly forms thus.
High molecular excrescence 332 as sept 322 and infrabasal plate 210 are adhered to upper substrate 110, bonding reliable bonding agent for example.
Figure 15 is a LCD shown in Figure 12 captured photo when being in white state.Figure 16 is that LCD shown in Figure 12 is in photo captured when deceiving state.
These photos have shown that the LCD of second embodiment can display gray scale and black and white.
Figure 17 and Figure 18 are being used for two insulated substrates according to the LCD of second embodiment of the invention captured photo in back that is separated from each other.
The photo of Figure 17 and Figure 18 shown before upper substrate 110 and infrabasal plate 210 are separated from each other, be arranged on the infrabasal plate 210 sept 322 by high molecular excrescence 332 close attachment in, for example adhere to the inside surface of upper substrate 110.
Figure 19 A, 19B, 19C, 19D and 19E illustrate the schematic cross sectional view that is used to make according to the technological operation of the LCD of second embodiment of the invention.More specifically, these illustrate the technological operation of using elastomeric polymer to form sept 322.
Shown in Figure 19 A, with photoresist, apply or be coated on the infrabasal plate 210 such as SU-8.Make the substrate 210 that is coated with photoresist optionally be exposed to UV light then, and, formed the pressing mold (stamp) that is used to impress spacer patterns thus the development of photoresist that is exposed via predetermined photomask.
Shown in Figure 19 B, the monomer of elastomeric polymer, for example PDMS (dimethyl silicone polymer) is applied or is coated on the infrabasal plate 210 with pressing mold.The substrate 110 that has deposited ITO is set then thereon.
Shown in Figure 19 C, two relative insulated substrates, for example go up insulated substrate 110 and following insulated substrate 210 and under about 100 °, be heated about 10 minutes, simultaneously pressurized.After so heating, framework is removed from upper substrate 110 and infrabasal plate 210.As a result, the strip sept 322 that is made of PDMS is retained on the infrabasal plate 210.
Shown in Figure 19 D, apply or be coated on the sept 322 the orientation agent and the friction matching agent by spin-coating method, thereby form both alignment layers.After forming both alignment layers, with liquid crystal 3 with can shine and the monomer of polymerization mixes by UV.More specifically, in the present embodiment, will mix mutually with about 95: 5 ratio with the UV epoxy resin NOA-65 that Norland company makes by the E7 nematic crystal that Merck IndustrialChemicals makes.Then this potpourri is inserted or is filled in by in the sept 322 formed zones.The upper substrate 110 that will deposit ITO then is disposed thereon.
Shown in Figure 19 E, make monomer polymerization thereby then UV illumination is mapped on upper substrate 110 or the infrabasal plate 210, thereby between upper substrate 110 and infrabasal plate 210, form high molecular excrescence 332.When manufacturing was used for the sample of experiment test, the use wavelength was approximately the UV light of 350nm, and the xenon lamp of 200W is used as the UV light source.
As mentioned above, the stamping technology (stamping technique) that uses pressing mold to impress sept can reduce manufacturing cost by simplifying sept formation technology.
Figure 20 shows the SEM photo of the pressing mold that is applicable to the technological operation shown in Figure 19 A, 19B, 19C, 19D and the 19E, and Figure 21 shows the SEM photo of the sept of the pressing mold formation of using Figure 20.Figure 22 is the amplification profile of circle part shown in Figure 21.
Figure 20,21 and 22 photo have shown that the sept that uses stamping technology to form also is uniform substantially.
In the second embodiment of the present invention shown in Figure 19 A, 19B, 19C, 19D and the 19E, pressing mold forms by carrying out photoresist deposition, exposure and development operation, forms sept on the pressing mold by applying or be coated in elastomeric polymer, such as the monomer of PDMS then.Selectively, can utilize PDMS to form pressing mold (by light etching process etc.) and use photoresist to form sept.
Figure 23 A and Figure 23 B are photos captured when the LCD by the technological operation manufacturing shown in Figure 19 A, 19B, 19C, 19D and the 19E is in black state and white state respectively.Figure 23 C and Figure 23 D are photos captured when the LCD by the technological operation manufacturing shown in Figure 19 A, 19B, 19C, 19D and the 19E mediates grey states in response to the grayscale voltage of 3V and 6V.
Figure 23 A and Figure 23 B have shown the LCD display gray scale effectively of utilizing process for stamping.Though shown in Figure 23 A, can cause some light to leak, utilize black matrix can significantly reduce or prevent this phenomenon.
Figure 24 is the skeleton view according to the LCD of third embodiment of the invention.
Compare with structure shown in Figure 12, the LCD of the 3rd embodiment further comprises the high molecular layer that is formed on upper substrate 110 inside surfaces except high molecular excrescence 332.
This structure by carry out repeatedly, for example twice UV irradiation obtains.For example, utilize photomask to form high molecular excrescence 332, thereby and carry out the UV irradiation second time and after forming high molecular excrescence 332, residual monomers is separated with liquid crystal with slit thereby carry out UV irradiation for the first time.
As mentioned above, before photopolymerization, monomer is mixed with liquid crystal.After mixing, carry out the UV irradiation to form the high molecular layer.This high molecular layer adheres to sept or adheres on the substrate.In having the flexible liquid crystal display of this structure, when LCD is in flexible state, sharp as be folded or when rolled-up, can not produce substrate lifting phenomenon and cell gap and can keep even substantially.In addition, because do not need the dispersion of sept, so the present invention is applicable to volume to volume technology (roll-to-rollprocess).
It will be apparent to one skilled in the art that under the prerequisite that does not depart from the spirit and scope of the invention, can modifications and variations of the present invention are.Therefore, the present invention is intended to cover all such modifications and variation, as long as it falls in the scope of claims and equivalent thereof.
The application requires in the right of priority of the 10-2005-0021405 korean patent application of submission on March 15th, 2005, and its full content is hereby incorporated by.
Claims (31)
1. LCD comprises:
First insulated substrate;
The second insulated substrate that is oppositely arranged with described first insulated substrate;
Be arranged at the liquid crystal layer between described first insulated substrate and the described the second insulated substrate;
Form and keep the sept in basic uniform gap between described first insulated substrate and the described the second insulated substrate; And
Be formed on the lip-deep high molecular layer of described the second insulated substrate, described high molecular layer links to each other described sept with described the second insulated substrate.
2. LCD according to claim 1 also comprises:
Be arranged at first electrode on described first insulated substrate; And
Be arranged at second electrode on the described the second insulated substrate.
3. LCD according to claim 1, wherein, described sept is lattice-shaped.
4. LCD according to claim 3, wherein, described sept is divided into a plurality of zones with described liquid crystal layer.
5. LCD according to claim 1, wherein, described high molecular layer comprises the polymkeric substance that is separated, this polymkeric substance that is separated is by obtaining on the potpourri that light shines the ultraviolet curing monomer that is arranged in the cell gap and liquid crystal.
6. LCD according to claim 5 wherein, is used for the only ultraviolet light that is separated of described monomer and described liquid crystal.
7. LCD according to claim 6, wherein, described monomer is the ultraviolet curing epoxy resin NOA-65 that is made by Norland company.
8. LCD according to claim 2 also comprises:
Be arranged on described first insulated substrate and with the thin film transistor (TFT) of described first electrode coupling.
9. LCD according to claim 2 also comprises:
Be arranged on the described the second insulated substrate and with another thin film transistor (TFT) of described second electrode coupling.
10. LCD according to claim 2, wherein, described sept comprises a plurality of bars, wherein a plurality of high molecular excrescences linearly are provided with basically and intersect with described sept.
11. LCD according to claim 1, wherein, described sept comprises elastic polymer material.
12. LCD according to claim 1, wherein, described sept comprises the dimethyl silicone polymer material.
13. a LCD comprises:
First insulated substrate;
The second insulated substrate that is oppositely arranged with described first insulated substrate;
Be arranged at the liquid crystal layer between described first insulated substrate and the described the second insulated substrate;
Form and keep the sept in basic uniform gap between described first insulated substrate and the described the second insulated substrate; And
Be arranged on the high molecular excrescence between described first insulated substrate and the described the second insulated substrate.
14. LCD according to claim 13, wherein, described sept comprises a plurality of bars, and described high molecular excrescence substantially linearly and with described sept intersects.
15. LCD according to claim 13 also comprises:
Be arranged at first electrode on described first insulated substrate; And
Be arranged at second electrode on the described the second insulated substrate.
16. LCD according to claim 13, wherein, described sept and described high molecular excrescence are divided into a plurality of zones with described liquid crystal layer.
17. LCD according to claim 14, wherein, described high molecular excrescence comprises the polymkeric substance that is separated, and this polymkeric substance that is separated is by obtaining on the potpourri that light shines the ultraviolet curing monomer that is arranged in the cell gap and liquid crystal.
18. LCD according to claim 17 wherein, is used for the only ultraviolet light that is separated of described monomer and described liquid crystal.
19. LCD according to claim 18, wherein, described monomer is the ultraviolet curing epoxy resin NOA-65 that is made by Norland company.
20. LCD according to claim 15 also comprises being formed at the first film transistor that is connected to described first electrode on described first insulated substrate simultaneously.
21. LCD according to claim 15 also comprises being formed at second thin film transistor (TFT) that is connected to described second electrode on the described the second insulated substrate simultaneously.
22. LCD according to claim 13, wherein, described sept comprises elastomeric polymer.
23. LCD according to claim 22, wherein, described sept comprises the dimethyl silicone polymer material.
24. the manufacture method of a LCD may further comprise the steps:
On first insulated substrate, form first electrode;
On described first electrode, form sept;
The potpourri of polymerisable monomer and liquid crystal material is applied on described first electrode with described fixed spacers;
The second insulated substrate is arranged on the described fixed spacers;
Described polymerisable monomer is separated with described liquid crystal material between polymerization period; And
The polymkeric substance that is separated being attached on the surface of described the second insulated substrate makes described sept and described the second insulated substrate be attached on the described polymkeric substance that is separated.
25. method according to claim 24, wherein, after being arranged at described the second insulated substrate on the described fixed spacers, described fixed spacers be formed on lip-deep second electrode of described the second insulated substrate and contact.
26. method according to claim 24 also comprises:
Be to form before described first electrode on described first insulated substrate, on described sept, apply alignment materials and friction covering described material thereon, to form both alignment layers.
27. method according to claim 24 wherein, forms described both alignment layers and comprises:
On described first electrode, apply photoresist;
Make described photoresist via mask exposure; And
The described photoresist that develops and exposed.
28. method according to claim 24 wherein, forms described sept and comprises on described first electrode:
Be formed for impressing the pressing mold of sept;
On described pressing mold, apply elastomeric polymer;
Described first insulated substrate with described first electrode is set on described elastomeric polymer; And
Heat simultaneously and pressurize being arranged at described first insulated substrate on the described elastomeric polymer.
29. method according to claim 28, wherein, the pressing mold that is formed for impressing described sept comprises:
Coating SU-8 photoresist on described first electrode;
With described SU-8 photoresist via mask exposure; And
The described SU-8 photoresist that develops and exposed.
30. method according to claim 24, wherein, by the potpourri of described monomer and described liquid crystal material being carried out the ultraviolet ray irradiation, carry out that described polymerisable monomer is separated with described liquid crystal material between polymerization period from the outside surface of described the second insulated substrate.
31. method according to claim 30 wherein, is carried out described ultraviolet ray irradiation by mask.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR21405/05 | 2005-03-15 | ||
| KR1020050021405A KR20060099885A (en) | 2005-03-15 | 2005-03-15 | Flexible liquid crystal display and manufacturing method of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1837905A true CN1837905A (en) | 2006-09-27 |
| CN100576027C CN100576027C (en) | 2009-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610059185A Expired - Fee Related CN100576027C (en) | 2005-03-15 | 2006-03-15 | Flexible liquid crystal display and manufacture method thereof |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060209246A1 (en) |
| EP (1) | EP1703315A1 (en) |
| JP (1) | JP2006259728A (en) |
| KR (1) | KR20060099885A (en) |
| CN (1) | CN100576027C (en) |
| TW (1) | TW200643525A (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20060099885A (en) | 2006-09-20 |
| US20060209246A1 (en) | 2006-09-21 |
| TW200643525A (en) | 2006-12-16 |
| JP2006259728A (en) | 2006-09-28 |
| EP1703315A1 (en) | 2006-09-20 |
| CN100576027C (en) | 2009-12-30 |
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